Improvement in vertical-screw water-wheels



mwm K. KnAA-rz? Vrfical-Screw Wafer Wheel.-

' Paten ted Sep. 12,187f.

Witnesses.

UNITED STATES PATENT OFFIoE.

DAVID K. KRAATZ, OF EPHRATA, ASSIGNOR OF ONE-HALF OF HIS RIGHT TO A. S.BABE, OF BAREVILLE, PENNSYLVANIA.

IMPROVEMENT IN VERTICAL-SCREW WATER-WHEELS.

Specification forming part of Letters Patent No. 118,863, datedSeptember 12, 1871.

To all whom it may concern:

Be it known that I, DAVID K. KRAATZ, of Ephrata, in the county ofLancaster and State of Pennsylvania, have invented a new and ImprovedWater-Wheel 5 and I hereby declare that the following is a full andexact description thereof, reference being had to the accompanyingdrawing which forms a portion of this specification, in Which- Figiue lis a side elevation, and Figs. 2, 3, and 4 are views of portions of thesame detached.

A vertical tube, E, descending from a scrollhead, 0, forms the casingfor the reception of the loosely-fitting and spiral1y-winged shaft S ofmy improved Water-Wheel. The said casing is secured in a stiff andstrong frame, and may be made of any suitable material. Suitablebearings or j ournal-boxes mustbe provided for the journals of the shaftS, which bearings or journal-boxes must be properly located and firmlysecured Within the supporting frame-Work of the Water-Wheel casin g. Thewater has a threefold action upon my improved Water-wheel, to Wit:First, the Water acts by percussion as it enters the scroll-shaped headof the casing; second, it acts by friction and gravity as it descendsthrough the spiral channels oi the wheel; and third, the propellingWater as it escapes from the Wheel reacts upon the stationary waterwhich incloses the base of the same; and, consequently, I contend thatmy improved water-Wheel is the most efiicient in action and the mosteconomical in construction of any Water-Wheel previously known to thepublic.

I claim as my invention The combination of the scroll-head O and thevertical casing-tube E with each other and with the spirally-Wingedwater-Wheel S, substantially as and for the purpose herein set forth.

DAVID K. KRAATZ.

Witnesses:

W. K. SELTZER, MARY SELTZER.

